const fs = require('fs');
const path = require('path');
const { logger, logRequestInfo, ErrorLogger, authLogger } = require('../config/logs');
const debug = require('debug')('app:authMiddleware');

const authMiddleware = async (req, res, next) => {
  if (req.isAuthenticated() || (req.session && req.session.user && req.session.user.name)) {
    const data = await fs.promises.readFile(path.join(__dirname, '../data', 'user.json'), 'utf8');
    const users = JSON.parse(data);
    const user = users.find(user => user.name === (req.session.user && req.session.user.name));


    if (!user) {
      authLogger.info('User is not authenticated and user name is not set');
      return res.redirect('/auth/login');
    }

    if (!req.session.user) {
      authLogger.info('User connection attempt in progress, verification in progress...');
      authLogger.info(`Login successfully completed, logged in user is: id=${user.id}, name=${user.name}, role=${user.role}, IP: ${req.ip}, User Agent: ${req.headers['user-agent']}`);
    }

    res.locals.user = user;
    req.session.user = user;
    req.userData = user;
    return next();
  } else {
    authLogger.info(`Authentication failed for IP: ${req.ip}, User Agent: ${req.headers['user-agent']}. Redirecting to login.`);
    debug('User is not authenticated, redirecting to login...');
    res.redirect('/auth/login');
  }
};

module.exports = authMiddleware;